/* ==========================================================================
   NASR INCUBATOR SYSTEM STYLESHEET (nasr.css)
   Theme: Option B1 "Emerald & Sand" (Approved Design Parameters)
   Target Domain: nasr.abbati.ng
   ========================================================================== */

:root {
  /* Color Palette */
  --nasr-bg: #FAFAFA;
  --nasr-card: #FFFFFF;
  --nasr-card-accent: #F0FDF4;
  
  --nasr-emerald: #064E3B;      /* Deep Northern Emerald */
  --nasr-emerald-hover: #043E2F;
  --nasr-sand: #F5E6D3;         /* Warm Desert Sand */
  --nasr-ochre: #D97706;        /* Warm Ochre Gold */
  --nasr-gold-light: #FEF3C7;
  
  --nasr-text-main: #022C22;
  --nasr-text-muted: #475569;
  --nasr-border: #DCFCE7;
  --nasr-border-subtle: #E2E8F0;
  
  /* Typography */
  --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Layout & Spacing */
  --container-max-width: 1140px;
  --radius-card: 14px;
  --radius-button: 10px;
  --radius-pill: 9999px;
  
  /* Shadows */
  --shadow-card: 0 4px 20px -2px rgba(6, 78, 59, 0.06);
  --shadow-hover: 0 10px 30px -4px rgba(6, 78, 59, 0.12);
  --shadow-glow: 0 0 20px rgba(6, 78, 59, 0.15);
}

/* Reset & Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  background-color: var(--nasr-bg);
  color: var(--nasr-text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography Utility */
h1, h2, h3, h4, h5 {
  font-family: var(--font-heading);
  color: var(--nasr-text-main);
  font-weight: 800;
  line-height: 1.25;
}

h1 { font-size: 2.75rem; letter-spacing: -0.02em; }
h2 { font-size: 2rem; letter-spacing: -0.01em; }
h3 { font-size: 1.35rem; }

p {
  color: var(--nasr-text-muted);
  font-size: 1.05rem;
}

a {
  color: var(--nasr-emerald);
  text-decoration: none;
  transition: color 0.2s ease;
}

/* Navigation Header */
.navbar {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--nasr-border);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 16px 0;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--nasr-emerald);
}

.brand-badge {
  background: var(--nasr-sand);
  color: var(--nasr-ochre);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  gap: 24px;
  align-items: center;
}

.nav-link {
  font-weight: 600;
  color: var(--nasr-text-muted);
}

.nav-link:hover {
  color: var(--nasr-emerald);
}

/* Buttons */
.btn-primary {
  background-color: var(--nasr-emerald);
  color: #FFFFFF !important;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  padding: 14px 28px;
  border-radius: var(--radius-button);
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-primary:hover {
  background-color: var(--nasr-emerald-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: var(--nasr-sand);
  color: var(--nasr-emerald) !important;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  padding: 14px 28px;
  border-radius: var(--radius-button);
  border: 1px solid rgba(217, 119, 6, 0.2);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  transition: all 0.25s ease;
}

.btn-secondary:hover {
  background-color: #EEDBC5;
  transform: translateY(-2px);
}

.btn-primary:focus-visible,
.btn-secondary:focus-visible {
  outline: 3px solid var(--nasr-ochre);
  outline-offset: 2px;
}

/* Hero Section */
.hero {
  padding: 80px 0 60px;
  background: linear-gradient(180deg, #F0FDF4 0%, #FAFAFA 100%);
  border-bottom: 1px solid var(--nasr-border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #FFFFFF;
  border: 1px solid var(--nasr-border);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--nasr-emerald);
  margin-bottom: 20px;
  box-shadow: var(--shadow-card);
}

.hero-title {
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 1.2rem;
  margin-bottom: 32px;
  max-width: 600px;
}

.hero-ctas {
  display: flex;
  gap: 16px;
  align-items: center;
}

.hero-card {
  background: var(--nasr-card);
  border: 1.5px solid var(--nasr-border);
  border-radius: var(--radius-card);
  padding: 32px;
  box-shadow: var(--shadow-card);
}

.hero-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--nasr-border);
}

.stat-num {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--nasr-emerald);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--nasr-text-muted);
}

/* Curriculum Accordion */
.section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 12px;
}

.section-subtitle {
  text-align: center;
  max-width: 650px;
  margin: 0 auto 48px;
}

.curriculum-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.curriculum-card {
  background: var(--nasr-card);
  border: 1px solid var(--nasr-border);
  border-radius: var(--radius-card);
  padding: 28px;
  box-shadow: var(--shadow-card);
  transition: all 0.3s ease;
  position: relative;
}

.curriculum-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--nasr-ochre);
}

.week-badge {
  background: var(--nasr-card-accent);
  color: var(--nasr-emerald);
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  display: inline-block;
  margin-bottom: 16px;
}

/* Squad Model Feature */
.squad-section {
  background: var(--nasr-emerald);
  color: #FFFFFF;
  border-radius: 24px;
  padding: 60px 48px;
  margin: 40px 0;
}

.squad-section h2, .squad-section p {
  color: #FFFFFF;
}

.squad-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.squad-feature-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-card);
  padding: 24px;
  backdrop-filter: blur(10px);
}

.squad-feature-card h4 {
  color: var(--nasr-sand);
  margin-bottom: 8px;
}

/* Application Form Styles */
.form-card {
  background: var(--nasr-card);
  border: 1px solid var(--nasr-border);
  border-radius: var(--radius-card);
  padding: 40px;
  box-shadow: var(--shadow-card);
  max-width: 720px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 8px;
  color: var(--nasr-text-main);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 1rem;
  font-family: var(--font-body);
  border: 1.5px solid var(--nasr-border-subtle);
  border-radius: 8px;
  background-color: #FAFAFA;
  transition: all 0.2s ease;
  min-height: 48px;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--nasr-emerald);
  background-color: #FFFFFF;
  box-shadow: 0 0 0 3px rgba(6, 78, 59, 0.1);
}

.form-input.error, .form-select.error, .form-textarea.error {
  border-color: #DC2626 !important;
}

.form-input.error:focus, .form-select.error:focus, .form-textarea.error:focus {
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.25) !important;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* Footer */
.footer {
  border-top: 1px solid var(--nasr-border);
  padding: 40px 0;
  text-align: center;
  color: var(--nasr-text-muted);
  font-size: 0.9rem;
}

/* Responsive Media Queries */
@media (max-width: 768px) {
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .form-row { grid-template-columns: 1fr; }
  .squad-section { padding: 36px 24px; }
  h1 { font-size: 2.1rem; }
  h2 { font-size: 1.6rem; }
}